蠕变条件 meaning in English
creep condition
creep curve
Examples
- In this paper , we will make the experiment as a mostly measure , take the pmma as a research object , an optical technique to observe the solicitation and spread of high polymer under creep in real time on line
本文以实验为主要手段，以pmma为研究对象，采用显微技术对高聚物蠕变条件下的银纹损伤引发和扩展进行了实时在线观测。 - With engineering polymer - pmma taken as the main researched object and viscoelastic failure considered as the theory basis , the non - linear viscoelasticity and crazing damage phenomena under creep condition in macromolecule material were researched by means of experiment
本文以工程高聚物pmma为主要研究对象，以粘弹性破坏理论为基础，以实验为手段，对高分子材料蠕变条件下的非线性粘弹性性能及其银纹损伤现象进行了初步探讨。 - ( 1 ) an optical technique is presented to quantify the creep crazing damage in stressed transparent glassy polymeric sheet of pmma . craze area density in this article is defined by ratio of crazing area and the overall area of the region selected . the specimens were loaded for a defined period of time under creep condition with room temperature , by optical microscope the evolvement of craze density varying with stress and time is obtained
Pmma ( polymethylmethacrylate )是一类重要的高聚物材料，在应用上属于用量大、使用范围广的一类通用材料，本文选用pmma为主要研究对象，主要研究成果如下： ( 1 )用显微镜对透明玻璃态材料pmma蠕变条件下的银纹损伤引发和演化进行了实验观测，将银纹所占面积和所取图象视场总面积的比值定义为银纹密度，得到了银纹密度随时间和应力变化的演化方程。 - ( 2 ) using craze density dcraze ( , ) to illustrate the damage degree of material , considering strain equivalent hypothesis , non - linear visco - elastic constitutive equation of pmma taken into consideration of the operation of craze damage is arrived . the pmma sheet is loaded under different forces to validate the non - linear visco - elastic constitutive equation with damage . the result shows that the theory curves obtained by the nonlinear viscoelasticity constitutive relation agrees with experimental data considerably well
( 2 )用银纹密度d _ ( craze ) ( ， t )来描述材料的损伤度d ，在考虑应变等效性假设的基础上，得到了pmma材料考虑损伤的非线性粘弹性材料的本构关系，运用此方程对材料在不同载荷水平下进行蠕变实验，从而对蠕变条件下的应变响应进行模拟和预报。 - The achievements and conclusions are listed as follows : 1 , basing on the single - axes stretching experiment result of pmma sample with holes and pmma sample without holes under creep , using non - linearity regress analysis , after non - linearity imitating the experiment data , we may get the crazing damage density evolvement curve of pmma sample with holes and pmma sample without holes follow the time and stress under different stress level
本文通过实验研究得到如下成果： 1 、基于有孔洞pmma试件和无孔洞pmma试件的蠕变条件下单轴拉伸实验结果，采用非线性回归分析，对所得数据进行非线性拟合，得到不同应力水平下，有孔洞pmma试件和无孔洞pmma试件银纹损伤密度值随应力及时间演化的曲线。